INDICIA READER ACOUSTIC FOR MULTIPLE MOUNTING POSITIONS

- Hand Held Products, Inc.

An indicia reader can include an indicia-capturing system, an indicia-decoding module, and an audio indicator system having a sound source. An indicia-reader housing can support these components, and the housing includes two adjacent mounting surfaces and a sound port opening formed within a portion of the common edge of the two adjacent surfaces. The indicia reader can be operatively mounted in at least two different positions by attaching one of the two adjacent surfaces to a support structure. The reader's sound port opening is in acoustic communication with the sound source of the audio indicator for transmitting audible indications emitted via the audio indicator system when the indicia reader is mounted in either of the at least two different mounting positions.

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Description
CROSS-REFERENCE TO RELATED APPLICATION

The present application claims the benefit of Chinese Patent Application for Invention No. 201710661845.9 for an INDICIA READER ACOUSTIC FOR MULTIPLE MOUNTING POSITIONS filed Aug. 4, 2017, which is hereby incorporated by reference in its entirety.

FIELD OF THE INVENTION

The present invention relates generally to the field of indicia readers. More specifically, the present invention relates to acoustic housings for transmitting audible indications to a user of a fixed-position indicia reader when the reader is mounted in various mounting positions.

BACKGROUND

Generally speaking, businesses have sought to maximize efficiency by using various devices to automate data entry. As one particular example, in the area of inventory management the indicia or symbol reading device (e.g., barcode reader, barcode scanner, RFID reader, etc.) has greatly reduced the time and errors inherent to manual data entry.

Indicia readers may fall within a number of general categories including handheld readers (e.g., mobile devices employed as code symbol readers), laser scan engine barcode readers, and image sensor based barcode readers. One such general category of indicia reader includes the fixed-mount or fixed-position indicia reader which may incorporate image sensor and/or laser-based scan engines.

Fixed-position indicia readers, although also potentially usable in a handheld or unmounted arrangement, are typically directed to a hands-free functional design (i.e., are configured to be mounted or installed on any number of mounting surfaces). Fixed-position readers may be utilized in general or rugged environments for a variety of applications (e.g., retail point-of-sale (POS), kiosks, healthcare, package sorting, direct part mark (DPM), boarding pass scanning, etc.). In one particular use case, fixed-mount indicia reading systems may be employed where the indicia (e.g., barcodes) to be read are presented by an operator or by a machine in approximately the same position and orientation on each read or scan attempt.

Fixed-position indicia readers generally include mounting mechanisms (e.g., threaded inserts and mounting screws) for affixing the reader on a mounting surface such as a wall.

Indicia readers may include visual and/or audio indicators for providing information to a user relating to the present status and/or the various operations of the indicia reader (e.g., failure indications, entering a different mode, completing a successful scan, etc.). Decoding success indications may be provided whereby, for example, the illumination system of the reader is switched off and accompanied by an audible indication (i.e., a tone) from a sound source (e.g., a speaker, beeper, etc.) in response to successfully reading a barcode. Further, illumination of an indicator light (e.g., an LED) from the housing of the reader may be provided as an indicator.

In a hands-free system such as a fixed-mount system (e.g., without a user-trigger mechanism), audible indications may be particularly important for providing information relating to the indicia reader's operations (e.g., that a successful scan has occurred). In the case of an audible indication, the sound signal generally travels from a sound source within the reader's housing through openings on a surface of the housing.

For ease of use and for optimal configurability, a fixed-position reader would ideally be accessible for mounting in a broad range of different positions to a mounting surface; for example, by including mounting mechanisms on all or substantially all of the surfaces of the reader's housing. In the case of audible indications, however, the openings exiting on a surface of the housing (i.e., to “voice” the audio) can be blocked by the mounting surface in certain mounting configurations. To solve this problem, additional sound sources having sound openings on additional surfaces can be added, but the additional audio components and related structural features result in increased complexity and cost during manufacturing, as well as a greater potential for component failure during operation.

Therefore, a need exists for more effective fixed-position indicia reading systems, including but not limited to systems including efficient, cost-effective fixed-mount indicia readers for transmitting audible indications to a user when mounted in different positions to a mounting surface.

SUMMARY

Accordingly, in one aspect, the present invention embraces an indicia reader. The indicia reader includes an indicia-capturing system for acquiring information about indicia within the indicia-capturing system's field of view; an indicia-decoding module configured for decoding indicia information within the indicia-capturing system's field of view, the indicia-decoding module having a signal processor; an audio indicator system having a sound source for providing audible indications relating to operations of the indicia reader; and a housing for supporting and at least partially enclosing the indicia-capturing system, the indicia-decoding module, and the audio indicator system. The housing includes two adjacent mounting surfaces that meet to form a common edge, and a sound port opening formed within a portion of the common edge and the two adjacent surfaces, where the sound port opening is recessed inward with respect to the common edge. The indicia reader is configured to be operatively mounted in at least two different positions by respectively attaching one of the two adjacent surfaces to a support structure, and the sound port opening is in acoustic communication with the sound source of the audio indicator for transmitting audible indications emitted via the audio indicator system when the indicia reader is mounted in either of the at least two different mounting positions.

In an exemplary embodiment, each of the two adjacent mounting surfaces includes at least one mounting insert for use in mounting the indicia reader to a support structure.

In another exemplary embodiment, a chamber is positioned within the housing and at least partially enclosing the audio indicator system and the sound source for acoustically communicating with the sound port opening.

In yet another exemplary embodiment, the chamber encloses the sound source, and the chamber includes a sound conducting channel spanning continuously from the sound source to the sound port opening.

In yet another exemplary embodiment, the sound conducting channel forms a continuous acoustic transmission path for transmitting audible indications emitted via the audio indicator system to the opening.

In yet another exemplary embodiment, the housing is substantially rectangular.

In yet another exemplary embodiment, the sound source is a single beeper.

In yet another exemplary embodiment, the sound port opening is formed within a beveled portion of the common edge joining the two adjacent mounting surfaces of the housing.

In yet another exemplary embodiment, the sound source is a single speaker.

In yet another exemplary embodiment, the indicia reader is a fixed-position indicia reader configured for acquiring information about indicia presented within the indicia-capturing system's field of view when the indicia reader is mounted in either of the at least two mounting positions.

In another aspect, the present invention embraces a housing for an indicia reader. The housing includes an audio indicator system at least partially enclosed within the housing, with the audio indicator system having a sound source for providing audible indications to a user relating to indicia reader operations. The housing also includes two adjacent mounting surfaces where the two adjacent mounting surfaces meet to form a common edge, and a sound conducting channel in acoustic communication with the sound source, where the sound conducting channel has a sound port opening formed within a beveled portion of the common edge which joins the two adjacent surfaces. The housing is configured to be mounted in at least two different mounted positions by respectively attaching one of the two adjacent mounting surfaces to a support structure. The sound conducting channel is configured to transmit audible indications emitted via the sound source to the sound port opening when the housing is mounted in either of the at least two different mounted positions.

In an exemplary embodiment, the housing includes and at least partially encloses an indicia-capturing system for acquiring information about indicia within the indicia-capturing system's field of view.

In another exemplary embodiment, the housing includes and at least partially encloses an indicia-decoding module configured for decoding indicia information within the indicia-capturing system's field of view, the indicia-decoding module comprising a signal processor.

In yet another exemplary embodiment, the housing is substantially rectangular.

In yet another exemplary embodiment, the sound source is a single beeper.

In yet another exemplary embodiment, the sound conducting channel includes a chamber positioned within the housing and at least partially enclosing the audio indicator system.

In yet another exemplary embodiment, the chamber encloses the sound source and the sound conducting channel spans continuously to the sound port opening.

In another aspect, the present invention embraces a fixed-position indicia reader. The fixed-position indicia reader includes an indicia-capturing system for acquiring information about indicia presented within the indicia-capturing system's field of view when the fixed-position indicia reader is mounted to a support structure; an audio indicator system for providing audible indications relating to indicia reader operations, the audio indicator system having a sound source comprising a single beeper; and a housing for supporting and at least partially enclosing the indicia-capturing system and the audio indicator system. The housing includes two adjacent mounting surfaces where the two adjacent mounting surfaces meet to form a common edge, and a sound port opening formed within a beveled portion of the common edge joining the two adjacent mounting surfaces. The housing is configured for operatively mounting the fixed-position indicia reader to a support structure in at least two different mounting positions by respectively attaching one of the two adjacent mounting surfaces to a support structure. The sound port opening is in acoustic communication with the sound source for transmitting audible indications emitted from the sound source to the sound port opening when the housing is mounted in either of the at least two different mounting positions.

In an exemplary embodiment, the housing comprises, and at least partially encloses, an indicia-decoding module configured for decoding indicia information within the indicia-capturing system's field of view, the indicia-decoding module including a signal processor.

In another exemplary embodiment, the sound port opening is in acoustic communication with the sound source via a sound conducting channel spanning continuously from the sound source to the sound port opening.

The foregoing illustrative summary, as well as other exemplary objectives and/or advantages of the invention, and the manner in which the same are accomplished, are further explained within the following detailed description and its accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a front perspective view depicting an exemplary mountable indicia-reader.

FIG. 2 is a rear perspective view depicting the exemplary mountable indicia-reader.

FIG. 3 is a schematic block diagram representative of a system design for the exemplary mountable indicia-reader.

FIG. 4 is a schematic block diagram representative of an exemplary indicia-reading system including an exemplary mountable indicia-reader.

FIG. 5 is a rear perspective internal view depicting the exemplary mountable indicia-reader.

FIG. 6 is a bottom perspective view depicting the exemplary mountable indicia-reader mounted to a support structure.

FIG. 7 is a left perspective view depicting the exemplary mountable indicia-reader mounted to a support structure.

DETAILED DESCRIPTION

The present invention embraces fixed-position indicia reading systems including mountable indicia readers having acoustic housings for effectively transmitting audible indications from a single sound source from various mounting positions or configurations.

In an exemplary embodiment, the fixed-position indicia reader is configured to be operatively mounted in at least two different positions by respectively attaching one of two adjacent mounting surfaces to a support structure. The exemplary mountable indicia reader also includes a sound port that is in acoustic communication with a sound source for effectively transmitting audible indications to a user when the fixed-position indicia reader is mounted in either of the at least two different mounting positions.

Indicia reading devices are often employed to decode indicia such as barcodes. A barcode is a machine-readable representation of information in graphic format. Traditionally, a barcode is a series of parallel bars and spaces of varying widths (e.g., a linear barcode or 1D barcode).

More recently, there has been an increase in the use of alternatives to the linear barcode. For example, matrix codes (e.g., 2D barcodes, QR Code, Aztec Code, Data Matrix, etc.) and Optical Character Recognition (OCR) have enjoyed increasing popularity. As used herein, terms such as indicia, barcode, and/or code symbol are intended in their broadest sense to include linear barcodes, matrix barcodes, and OCR-enabled labels, but are not limited to these examples.

One category of indicia readers includes laser-based readers, generally including a laser diode assembly generating a laser light beam and a moving mirror for sweeping the laser light beam across a decodable symbol, whereby a signal is generated corresponding to the decodable symbol.

Image sensor-based readers include multi-element image sensors such as CID, CMOS, or CCD image sensors and an imaging optic for focusing an image onto the image sensor. In the operation of an image sensor-based reader, an image of a decodable symbol is focused on an image sensor and a signal is generated corresponding to the symbol. Image sensor elements may be arrayed in a line or in a rectangular matrix or area. Area image sensors, for example, capture a digital picture and use software algorithms to find and decode one or more symbols.

Image sensor-based readers are, generally, more durable and offer additional features relative to laser scan engine readers. Features and functions which have been incorporated into image sensor-based barcode readers include image processing capabilities.

With reference to the drawings, FIGS. 1 and 2 depict perspective views an exemplary indicia-reading device according to the present invention, in this case a fixed-position or mountable indicia reader 100 arranged primarily for fixed-position reading. For ease of reference, FIGS. 1 and 2 depict the exemplary reader 100 in an unmounted arrangement. FIGS. 6 and 7, discussed below, depict a mounted arrangement.

The exemplary mountable indicia reader 100 includes a housing 102. The housing 102 has front surface 102a including a light transmission window 103 integrated within the front surface portion of the housing 102. The housing 102 further includes a top surface 102b, a bottom surface 102c, a right-side surface 102d, a left-side surface 102e, and a back-side surface portion 102f. The back-side of the housing incorporates a cable 600 electronically connected to the reader 100 for operation in an exemplary indicia reading system, as further described below with reference to FIG. 4.

Respective surfaces of the indicia reader 100 include mounting mechanisms 131 for affixing or mounting the reader on a mounting surface (e.g., a wall, a table, etc.). In one example, the mounting mechanisms 130 include threaded inserts and corresponding mounting screws, but any of a range of acceptable mechanisms or fasteners may be used. In the present case, the fixed-position reader 100 includes mounting mechanisms 130 on each respective surface except for the back-side portion including connector cable 600 (e.g., substantially all of the surfaces of the reader's housing). Thus, the fixed-position reader 100 is advantageously available for mounting in a broad range of different positions to a mounting surface.

As further described below with reference to FIGS. 5-7, the exemplary mountable indicia reader 100 includes sound ports 116 (FIG. 2) that are in acoustic communication with an audio indicator system having a sound source for transmitting audible indications to a user when the fixed-position indicia reader is mounted in different positions.

Behind the light transmission window 103, the housing 102 may include may include one or more light sensing assemblies (i.e., indicia-capturing systems), such as an image sensor-based reading engine and/or a laser scan engine that is utilized for reading indicia, symbols, images, and the like.

The exemplary mountable indicia reader 100, when positioned in a fixed or mounted position (e.g., FIGS. 6 and 7), may operate in a pass-through scanning mode whereby objects 112 bearing indicia are passed within a field of view 104 to activate an indicia reading system, for example, as generally depicted schematically at FIG. 3. The exemplary reader 100, when positioned in a fixed or mounted position, may also operate in a presentation scanning mode whereby placing objects into an activation range of infrared (IR) sensor 105 (FIG. 1) activates an indicia reading system to capture or scan indicia within a field of view 104, decode the indicia, and send relevant data (e.g., via connector 600).

The reader 100 could also be configured for manual activation or operation, such that a manually-actuated button or other user-interface mechanism (e.g., keyboard, trigger, etc.) may be utilized to activate an indicia reading system (not explicitly shown).

The exemplary indicia reader, in this case a mountable, fixed-position reader 100, has an indicia reading system that includes an indicia-capturing system 210, as depicted at FIG. 3. The indicia-capturing system 210 acquires information about indicia within its field of view 104. Typically, the indicia reader 100 is mounted on a surface and functions in an automatic mode (e.g., presentation mode) whereby an object 112 that bears an indicium may be placed within the field of view 104 of the indicia-capturing system 210. The indicia reader 100, however, could also be utilized in a handheld mode where the indicia-capturing system 210 may be manipulated to reposition the field of view 104 to include the object 112 bearing the indicium.

In some instances, the indicia-capturing system 210 may be a laser-based system that sweeps a light beam (e.g., a laser beam) across the field of view 104 and then receives the optical signals that reflect or scatter off the indicium. Typically, the optical signal is received using a photoreceptor (e.g., photodiode) and is converted into an electrical signal. The electrical signal is an electronic representation of the indicia information (e.g., the data represented by the indicia). When in the form of an electrical signal, this information can be processed (e.g., decoded).

The indicia-decoding module 220 is configured to decode indicia information (e.g., electrical signal or digital image) acquired by the indicia-capturing subsystem 210. Although the indicia reader 100 has been described as including an indicia-decoding module 220 as shown, this is only by way of example. In other contemplated embodiments, the indicia-reader 100 may include an indicia-capturing system 210 and transmit the acquired optical information for processing or decoding at an external host or similar system (e.g., via connector 600). References contained herein to electrical signals are intended broadly to also encompass digital images capable of being electronically processed (e.g., an image-processing computer processor).

FIG. 4 is a schematic block diagram representing various exemplary subsystems or components of an exemplary indicia-reading system 1000, and which includes the systems of indicia reader 100 as generally depicted schematically and described with respect to FIG. 3. Although FIG. 4 includes schematic representations of components for an image-sensor based reader 100, as noted above the exemplary indicia reader 100 may alternatively (or in addition) include a laser-based scanning arrangement. With reference to FIG. 4, a border illustrates housing 102 with the exemplary components depicted as positioned within the border being components disposed, at least partially, within housing 102.

The exemplary indicia-reading system 1000 of FIG. 4 includes an image formation and detection mechanism (IFD) 312 (i.e., a camera) having imaging optics for producing a field of view 104. The camera 312 may include an area-type image detection array for detecting imaged light reflected off an object (e.g., object 112 as shown at FIG. 3).

Further, the exemplary indicia-reading system 1000 includes an illumination system 316 (e.g., having one or more LEDs) for producing illumination within the field of view 104. The emitted illumination may be transmitted through a narrow-band transmission-type optical filter.

An object detection subsystem 313 is in operative communication with IR sensor 105 for producing an IR-based object detection field (e.g., for activating an indicia reading system when objects are passed within the detection field).

A communication assembly 321 is configured for receiving input and for outputting processed image data and related information to an external host computer 400 or other device (e.g., via a wired or wireless connection). For example, the communication assembly 321 may transmit/receive data via connector 600.

Each respective subsystem of the exemplary indicia-reading device 100 may be operatively interfaced via a controller 314, and the components coupled to a system bus 300.

As shown, the exemplary indicia-reading device 100 includes an audio indicator system 110 including a sound source 111 for providing information to a user relating to the present status and/or the various operations of the indicia reader (e.g., failure indications, entering a different mode, completing a successful scan, etc.). Further, illumination of an indicator light (e.g., an LED) of the housing 102 from illumination indicator system 341 may be provided as a status indicator relating to reader operations.

Referring to further aspects of the exemplary indicia reading system 1000, the exemplary mountable indicia reader 100 can include a central processing unit (CPU) 318 for processing digital signals output by the camera 312 or other/additional light sensing assemblies. The indicia reader 100 may also include random access memory (RAM) 217, a read only memory 219, and a storage memory 220 (e.g., flash memory, a hard drive, etc.).

For attempting to decode indicia information, CPU 318 can process digital signal image data. The data corresponds to a line of pixel positions (e.g., a row, a column, or a diagonal set of pixel positions) in the case of an image-sensor-array-based light sensing assembly of FIG. 4. Otherwise, a digital signal representing an indicium can correspond to a scan path in the case of a laser-scanning-based light sensing assembly to determine a spatial pattern of dark and light cells. The CPU 218 can convert each light and dark cell pattern determined into a character or character string via table lookup.

In other contemplated embodiments, the indicia-reader 100 may capture and transmit the acquired optical information for processing or decoding at an external host or similar system (e.g., via a wired or wireless connection).

Where a decodable indicia representation is, for example, a 2D bar code symbology, a decode attempt can comprise the steps of locating a finder pattern using a feature detection algorithm, locating matrix lines intersecting the finder pattern according to a predetermined relationship with the finder pattern, determining a pattern of dark and light cells along the matrix lines, and converting each light pattern into a character or character string via table lookup.

Regarding CPU 318, CPU 318 may run an operating system (OS) and a plurality of applicable device drivers via a communication interface 321.

Indicia reader 100 can include a power supply 322 that supplies power to a power grid 340 to which the internal electrical components (e.g., integrated circuits) can be connected. Power supply 322 can be coupled to internal or external power sources 500; e.g. a battery, a serial interface (e.g., USB RS232), and/or an AC/DC transformer.

FIG. 5 is a rear-perspective internal view (i.e., a cutaway view) of the exemplary mountable reader 100. FIG. 5 illustrates the acoustic structure and related features of the exemplary housing 102. An audio indicator system 110 including a sound source 111 is disposed within the housing and positioned on a substrate 112 (e.g., an integrated circuit board). The audio indicator system 110 is configured and arranged for providing information to a user relating to the present status and/or the various operations of the indicia reader, for example, by emitting a tone after completion of a successful scan.

A chamber component 113 within the housing is shown enclosing portions of the audio indicator system 110 and surrounding the sound source 111. For example, the chamber may include a recess 113a forming an interference or snap fit onto a section of the audio indicator system 110 protruding from the substrate 112 in order to mate with the substrate 112. The chamber may be formed via injection molding of a durable rubber or elastomeric material.

As shown, the chamber 113 forms a sound conducting channel 120 (e.g., an acoustic-waveguide, sound conducting conduit, etc.) spanning from first end 114 about the sound source 111 to a second end 115 about the sound port openings 116. Thus, the sound conducting channel 120 is in acoustically communication with the sound port opening 116 for communicating audible indications emitted via the audio indicator system 110 to a user.

As depicted in the drawings, the exemplary housing 102 has substantially rectangular appearance, generally a rectangular box or prism, notwithstanding the connector 600 features and slightly rounded edges (e.g., for ease of use and handling). The sound port segment 125 (e.g., including the sound port openings 116 or beeper holes) is positioned within a void space along an edge 130 where two adjacent surfaces 102c, 102e meet. In this regard, the sound port segment 125 is inset, extending inward with regard to the outer portion of the adjacent edge 130.

As depicted, the sound port openings 116 are formed within a beveled portion or segment 125 of the common edge 130 joining the two adjacent mounting surfaces 102c, 102e of the housing 102. Thus, even though the sound source 111 of the audio indicator system 110 may comprise a single speaker, beeper, or other sound emitting mechanism, the acoustic housing 102 can provide sound indications to a user when mounted on either of the two adjacent mounting surfaces 102c, 102e in various mounted positions (e.g., at least two different mounting positions).

FIGS. 6 and 7, respectively, show the exemplary fixed-position reader 100 mounted onto a supporting surface 140 about the left-side surface 102e (FIG. 6) and the bottom surface 102c (FIG. 7). As illustrated, the sound ports 116 are not being blocked by the mounting surface 140 in either arrangement. Thus, audio signals emitted from the sound source 111 are effectively conducted through the channel acoustic structure 120 (FIG. 5) and transmitted through the sound ports 116 formed in the indicia reader housing 102 at recessed segment 125, therefore increasing the sound projection and/or the ability of a user to perceive the audible indications.

As shown and described herein, the exemplary acoustic housing for a fixed-position indicia reader includes a sound channel and sound ports formed about recessed or inset segment joining two adjacent mounting surfaces of the housing. Accordingly, even when the sound source comprises a single emitter (e.g., a beeper or speaker), the fixed-position indicia reader can transmit audible indications to a user when the indicia reader is mounted to a support surface on either of the two adjacent mounting surfaces without the sound being blocked by the support surface.

To supplement the present disclosure, this application incorporates entirely by reference the following commonly assigned patents, patent application publications, and patent applications:

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In the specification and/or figures, typical embodiments of the invention have been disclosed. The present invention is not limited to such exemplary embodiments. The use of the term “and/or” includes any and all combinations of one or more of the associated listed items. The figures are schematic representations and so are not necessarily drawn to scale. Unless otherwise noted, specific terms have been used in a generic and descriptive sense and not for purposes of limitation.

Claims

1.-20. (canceled)

21. An apparatus comprising:

a housing having two adjacent mounting surfaces and a sound conducting channel in acoustic communication with a sound source, wherein the housing is configured to be mounted in at least two different mounted positions by respectively attaching one or more of the two adjacent mounting surfaces to a support structure of an indicia reader, wherein the two adjacent mounting surfaces meet to form a common edge, and wherein the sound conducting channel comprises a sound port opening positioned with at least a portion on the common edge;
an indicia-capturing system at least partially enclosed within the housing; and
an audio indicator system at least partially enclosed within the housing, the audio indicator system comprising the sound source, wherein the sound source is configured to provide audible indications.

22. The apparatus of claim 21, wherein the indicia reader is a fixed-mount indicia reader.

23. The apparatus of claim 21, wherein the indicia-capturing system comprises at least one image sensor and at least one imaging optic, wherein the indicia-capturing system is configured to capture an image of at least one decodable symbol that is focused on the at least one image sensor via the at least one imaging optic.

24. The apparatus of claim 23, wherein the at least one image sensor is a CMOS image sensor.

25. The apparatus of claim 24 wherein the at least one image sensor comprises a two dimensional array of pixels adapted to operate in a global shutter mode.

26. The apparatus of claim 25 wherein the apparatus further comprises a processor that is configured to process the image of the at least one decodable symbol.

27. The apparatus of claim 26 wherein the processor is configured to determine a spatial pattern of dark and light cells and convert each light and dark cell into a character or a character string via table lookup.

28. The apparatus of claim 26 wherein the processor is configured to:

locate a finder pattern using a feature detection algorithm;
locate matrix lines intersecting the finder pattern according to a predetermined relationship with the finder pattern;
determine a pattern of dark and light cells along the matrix lines; and
convert each light pattern into a character or a character string via table lookup.

29. The apparatus of claim 28 wherein the processor is configured to cause an audio signal to be generated by the audio indicator system in an instance in which at least one symbol in the image of the at least one decodable symbol is decoded.

30. The apparatus of claim 28 wherein the apparatus further comprises an illumination system, wherein the illumination system is configured to provide an indication in an instance in which the at least one symbol in the image of the at least decodable symbol is decoded.

31. The apparatus of claim 21 wherein the sound port opening is formed within a beveled portion of the common edge joining the two adjacent mounting surfaces of the housing.

32. The apparatus of claim 21 wherein the sound port opening is recessed inward with respect to the common edge.

33. The apparatus of claim 21, wherein the sound conducting channel is configured to transmit the audible indications emitted via the sound source to the sound port opening when the housing is mounted in either of at least two different mounted positions.

34. The apparatus of claim 33, wherein the sound conducting channel comprises a chamber that is positioned within the housing and at least partially enclosing the audio indicator system.

35. The apparatus of claim 34, wherein the chamber encloses the sound source and the sound conducting channel spans continuously to the sound port opening.

36. The apparatus of claim 21, wherein indicia reader is a portable indicia reader.

37. The apparatus of claim 36, wherein the indicia-capturing system comprises at least one image sensor and at least one imaging optic, wherein the indicia-capturing system is configured to capture an image of at least one decodable symbol that is focused on the at least one image sensor via the at least one imaging optic.

38. The apparatus of claim 37, wherein the at least one image sensor is a CMOS image sensor that comprises a two dimensional array of pixels adapted to operate in a global shutter mode and wherein the apparatus further comprises a processor that is configured to:

locate a finder pattern using a feature detection algorithm;
locate matrix lines intersecting the finder pattern according to a predetermined relationship with the finder pattern;
determine a pattern of dark and light cells along the matrix lines; and
convert each light pattern into a character or a character string via table lookup.

39. A system comprising:

a fixed-mount indicia reader; and
a housing having two adjacent mounting surfaces, wherein the housing is configured to be mounted in the fixed-mount indicia reader in at least two different mounted positions, wherein the two adjacent mounting surfaces meet to form an edge, wherein the housing has a sound port opening that is proximate to the edge, and wherein the sound port opening is in communication with a sound source that is configured to provide audible indications, the housing comprising: an indicia-capturing system at least partially enclosed within the housing, wherein the indicia-capturing system comprises an image sensor and an imaging optic; an illumination system at least partially enclosed within the housing, wherein the illumination system is configured to produce illumination; and a processor configured to process signals output by the indicia-capturing system and cause the sound source to provide the audible indications.

40. The system of claim 39, wherein the at least one image sensor is a CMOS image sensor.

41. The system of claim 40 wherein the at least one image sensor comprises a two dimensional array of pixels adapted to operate in a global shutter mode.

42. The system of claim 41 wherein the processor is configured to determine a spatial pattern of dark and light cells from the signals output by the indicia-capturing system and convert each light and dark cell pattern into a character or a character string via table lookup.

43. The system of claim 42 wherein the processor is configured to:

locate a finder pattern in the signals output by the indicia-capturing system using a feature detection algorithm;
locate matrix lines intersecting the finder pattern according to a predetermined relationship with the finder pattern;
determine a pattern of dark and light cells along the matrix lines; and
convert each light pattern into a character or a character string via table lookup.

44. The system of claim 39 wherein the sound port opening is formed within a beveled portion of the edge joining the two adjacent mounting surfaces of the housing.

45. The system of claim 39 wherein the sound port opening is recessed inward with respect to the edge.

46. An indicia reader, comprising:

an indicia-capturing system;
an audio indicator system for providing audible indications relating to indicia reader operations, the audio indicator system having a sound source; and
a housing that is detachably attached to the indicia reader and configured to support and at least partially enclose the indicia-capturing system and the audio indicator system, the housing comprising: two adjacent mounting surfaces wherein the two adjacent mounting surfaces meet to form a common edge; and a sound port opening adjacent to the common edge joining the two adjacent mounting surfaces.

47. The indicia reader of claim 46, wherein the indicia-capturing system comprises at least one image sensor and at least one imaging optic, wherein the indicia-capturing system is configured to capture an image of at least one decodable symbol that is focused on the at least one image sensor via the at least one imaging optic.

48. The indicia reader of claim 47, wherein the at least one image sensor is a CMOS image sensor that comprises a two dimensional array of pixels adapted to operate in a global shutter mode and wherein The indicia reader further comprises a processor that is configured to:

locate a finder pattern using a feature detection algorithm;
locate matrix lines intersecting the finder pattern according to a predetermined relationship with the finder pattern;
determine a pattern of dark and light cells along the matrix lines; and
convert each light pattern into a character or a character string via table lookup.

49. The indicia reader of claim 46 wherein the sound port opening is formed within a beveled portion of the common edge joining the two adjacent mounting surfaces of the housing.

50. The indicia reader of claim 46 wherein the sound port opening is recessed inward with respect to the common edge.

Patent History
Publication number: 20210182516
Type: Application
Filed: Feb 12, 2021
Publication Date: Jun 17, 2021
Applicant: Hand Held Products, Inc. (Charlotte, NC)
Inventors: Jean-Pierre STANG (Auzeville-Tolosane), Wenkang LU (Suzhou)
Application Number: 17/248,916
Classifications
International Classification: G06K 7/10 (20060101); H04R 1/02 (20060101);